6. Depositional environments III

A petroleum company has found a prospective reservoir unit. It seems to be a sedimentological trap,

so only sedimentological considerations are needed in order to estimate its size. Based on a test

drilling, the company knows that the reservoir unit is composed of ooid sand. The seismic data

indicates a sedimentary system in the surrounding that transits from shallow-marine to deep-marine

environments. The coastline is estimated to lie in an E-W direction with the land in the south and

the deep-marine area in the north.